Red Leaf Barberry Hedge. (5 shrubs for 30$). This thorny, brightly colored shrub is the perfect choice to create a barrier against unwanted traffic or to deter deer. Left to grow naturally it has 5-7' spread and height but can be pruned and maintained at a much smaller size.
Growing Raspberries in mounds I like this idea because it keeps thorny raspberry bushes in one controlled place rather than seeing them spread all over the place. I love raspberries but the plants are not that pretty.